The present invention relates to a shot applicator device and, more particularly, to an automatic shot applicator device including a housing with a shot storage/delivery chamber, a tip structured to deliver the shot into tubing attached to various fishing tackle/equipment including fishing rigs, line, hooks, leaders, fly fishing tippet, and/or inserting directly into lures and baits, thereby changing the density (add or decrease weight) of the fishing tackle/equipment, and a mechanism structured to apply a force to the shot thrusting it through the tip and into such material.